Valve stem grinder attachment

ABSTRACT

The invention comprises an aligner for grinding valve stems having an elongated plate member with a laterally extending shaft mounted at one end and with the plate having a bore at its other end, said plate has an open area intermediate its length to receive the upper end of the valve stem and valve spring therebetween, said bore at the other end of said plate being adapted to receive the mounting stud of the rocker arm of an engine head and to be locked thereto by a nut threaded onto said stud, said shaft being adapted to receive the hollow shaft of a grinder wheel to allow the grinder wheel to be lowered on to the upper end of the valve stem perpendicular to its length to grind the upper end of the valve stem.

United States Patent [72] Inventor Orville A. Brenden 1625 Fifth Ave, South, Fargo, N. Dak. 58102 [21 App]. No, 762,942 [22] Filed Sept. 26, 1968 [45] Patented May 4,1971

[54] VALVE STEM GRINDER ATTACHMENT 2 Claims, 5 Drawing Figs.

[52] U.S. CI Sl/241 [51] Int. Cl B24b 19/00 [50] Field ofSearch ..5l/241,24l (S), 241.1

[56] References Cited UNITED STATES PATENTS 821,367 5/1906 Mitchel] 51/241 1,941,977 l/1945 Evans Primary Examiner-William R. Armstrong Attorney-Robert E. Kleve ABSTRACT: The invention comprises an aligner for grinding valve stems having an elongated plate member with a laterally extending shaft mounted at one end and with the plate having a bore at its other end, said plate has an open area interstem.

PATENTEUMAY 4197: 3577588 7 INVENTOR Orville A. Bren den ATTORNEY This invention relates'to grinding equipment, more particularly, the invention relates to valve stem grinding equipment.

it is an object of the invention to provide a novel, aligning device for grinding valve stems. I

It is a further object to the invention to provide a novel aligning device for grinding the tops of valve stems which can easily be attached and detached to the head of an engine and which can be used to grind the tops of valve stems in an accurate manner perpendicular to their length.

Further objects and advantages of the invention will become apparent as the description proceeds when taken in conjunction with the accompanying drawings, wherein:

FIG. 1 is a perspective view of the novel valve stem grinder aligning invention shown operatively installed with a grinder on the head of an engine.

FIG. 2 is a side elevational view of the valve stem grinding aligning invention shown operatively installed with a grinder on the head of an engine.

FIG. 3 is a top plan view of the valve stem grinder aligning invention shown in operative position with a grinder on the head of an engine.

FIG 4 is a side elevational view of the valve stem grinder aligning device.

FIG. 5 is a top view of the valve stem grinder aligning device.

Briefly stated, the invention comprises an aligner for grinding valve stems, elongated'plate member, a laterally extending shaft mounted at one end with the plate having a bore at the other end, and said plate has an open area intermediate its length to receive the upper end of the valve stem and valve spring therebetween, said bore at the other end of said plate being adapted to receive the mounting stud of the rocker arm of an engine head and to be locked thereto by a nut threaded onto said stud, said shaft being adapted to receive the hollow shaft of a grinder wheel to allow the grinder wheel to be lowered onto the upper end of the valve stem perpendicular to its length to grind the upper end of the valve stem.

Referring more particularly to the drawings in FIGS. 1 and 2, the valve stem aligning invention 20 is illustrated operative-' ly installedon the head 21 of a conventional engine with a grinding wheel 22 mounted to the aligning invention 20 and a power drill 23 for powering the grinder wheel.

The elongated aligning plate 25 of the invention 20 has a bore 26 at one end to receive the conventional rocker arm mounting stud 27 of a conventional engine head 21 and a collar 28 is mounted on the mounting stud 27 and spaces the plate 25 above the upper surface 21 of the head 21 of the en.- gine. A nut 29 is threaded onto the mounting stud 27 to lock the plate 25 in its position illustrated in FIG. 2. A cylindrical shaft 30 is fixed to the other end of the plate 25 and a grinder wheel 22 has a cylindrical shaft 31 fixed coaxially to the grinder wheel with a hollow cylinder bore 32 is slideably and rotatively received in the cylindrical shaft 30 of the mounting plate. At the upper end of the shaft 31 is a square hole or recess 33 which receives the square output shaft 34 of the power drill 23.

. valve stem 37 has its upper end 37' 22' of the grinder wheel 22.

The mounting plate 25 has in its center abore or opening 35 to receive the valve spring 36 of the conventional engine. The

The mounting plate 25 has a lateral bend 25 to place the longitudinal axis of shaft 30 in a parallel alignment with the longitudinal axis of the valve stem 37 so that the grinding wheel when slidably mounted over shaft 30 will abut the upper face 37' of the valve stem with the under surface 22'-in flush perpendicular relation to the longitudinal axis of the valve stem so that when the power drill output shaft 34 is rotating, it will be energizing the drill 23; it will rotate the shaft 31 and grinding wheel 22 on the shaft 30 of the aligning plate 25 will grind the upper end 37' of the valve stem and in a true perpendicular relation to the length of the valve stem.

The device may be readily removed from the head of an engine by slideably removing the output shaft 34 of the ower rill out of the square recess 33 of the shaft 31 an then slideably removing the grinding wheel and its shaft 31 from the shaft 30 and afterwards the nut 29 may be unthreaded from threaded mounting stud 27 and aligning plate may be removed from the mounting stud 27 and the collar 28 may be slid off of the stud 27.

Thus it will be seen that a novel aligning device has been provided which will grind the upper face of the valve stem in a true perpendicular relation to the axis of the stem. The mounting plate may be made in different sizes to accommodate different sizes of engines and blocks, and the mounting plate may I be bent in many different angles to place the grinding wheel in perpendicular alignment with the longitudinal axis of the stem. Also the mounting plate may be made adjustable to accommodate other variations in engine heads where there are differences in the dimensions between the rocker arm mounting stern and the valve stem.

It will be obvious that various changes and departures may be made to the invention without departing from the spirit and scope thereof and accordingly, it is not intended that the invention be limited to that specifically described in the specification or as illustrated in the drawings but only as set forth in the appended claims.

1 claim:

1. An aligning device for grinding valve stems comprising an elongated plate having a laterally extendingv shaft atone end for receiving a hollow shaftof a grinding wheel, said plate having a first bore at its other end for receiving and locking the plateto a rocker arm mounting stud of an engine head, said plate having an opening intermediate its length between said first bore and said shaft and enlarged in relation to said first bore to receive a valve stem and valve spring therein, whereby a power drill may be employed to rotate the shaft of the grinding wheel and the grinding wheel may in turn rotate and engage the upper end of the valve stem in perpendicular relation to the longitudinal axis of the valve stem to grind the valve stem.

2. An aligning device according to claim 1 wherein acollar is provided beneath the plate member to surround the mounting stud to space the plate member above the engine head.

abutting the under surface 

1. An aligning device for grinding valve stems comprising an elongated plate having a laterally extending shaft at one end for receiving a hollow shaft of a grinding wheel, said plate having a first bore at its other end for receiving and locking the plate to a rocker arm mounting stud of an engine head, said plate having an opening intermediate its length between said first bore and said shaft and enlarged in relation to said first bore to receive a valve stem and valve spring therein, whereby a power drill may be employed to rotate the shaft of the grinding wheel and the grinding wheel may in turn rotate and engage the upper end of the valve stem in perpendicular relation to the longitudinal axis of the valve stem to grind the valve stem.
 2. An aligning device according to claim 1 wherein a collar is provided beneath the plate member to surround the mounting stud to space the plate member above the engine head. 